L-Card ADC Series, Руководство пользователя

Страница: 52 / 69

5.7. Power supply system and galvanic isolation.
Parameter, characteristics Value, description
Operating voltage range of the E-502 low-
voltage supply input +8…+30 V
Power consumption:
•
From the external E-502 power
source
•
From the USB input
to 6 W
No more than 0.025 W
Test voltage of galvanic isolation:
•
Between AGND, DGND circuits,
connected together, and GND
400 V 50 Hz during 1 min.
•
Between GND circuits and Ethernet
lines, connected together
1500 V 50 Hz during 1 min.
Maximum permissible voltage rise rat
between galvanically isolated circuits
10
kV / μs
The method for estimating the load power is given in p.
4.8
,
p.
44
The total load power taken from all outputs
E-502 (according to the method of
estimating the load power is given in p.
4.8
on page
44
)
For E-502-P-EU-D
For E-502-X-U-D
0.4 W
0.4 W
For E-502-X-U-X 0.8 W
External analog power supply outputs +15 V, -15V. The maximum load current is up to 30 mA,
provided that the total load power is not exceeded.
SC is
prohibited . Outputs are switched on by jumpers, (see
p.
2.2.1
), this possibility is dependent on whether the
corresponding outputs of the DAC are used
External digital circuits supply output +3.3 V. The operating current of the load is up to 50 mA
permanently, up to 100 mA for a short time.